TY  - BOOK
AU  - Shiv Sunder Singh.
AU  - Bhupendra Pratap Singh.
AU  - Ashutosh Kumar.
AU  - Ravi Prakash Vishwakarma.
TI  - Mechanical engineering: all india state PSC AE I ESE I ISRO I GATE I PSU 
U1  - 620.0076 
PY  - 2024///
CY  - Prayagraj
PB  - Youth competition times
KW  - Mechanical engineering
ER  -